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Black wiring harness with rectangular interface module and multiple coloured connectors

iDatalink

iDatalink HRN-HRR-TO1 Radio Replacement Harness with ADS-MRR Module

SKU CH-7GZ1-JA576

Harness and interface module retain steering wheel controls, backup camera and vehicle settings when fitting an aftermarket stereo to select 2005–2018 Toyotas

  • TypeHarness
  • FeaturesRequires Maestro ADS-MRR or ADS-MRR2 module
  • Retains steering wheel audio controls for safe operation
  • Retains backup camera with any aftermarket stereo for visibility
  • Retains vehicle settings personalization menu with iDatalink-ready stereos
  • Retains factory amplifier for original audio quality
  • Compatible with select Toyota vehicles from 2005 to 2018

Toyota/Scion 2005-2018 radio harness

This installation harness connects an aftermarket stereo to select Toyota and Scion vehicles built between 2005 and 2018. It works with the Maestro ADS-MRR or ADS-MRR2 module to integrate the new head unit into the vehicle's data network. The kit is designed for drivers who want a modern receiver without losing factory convenience features. Professional installation is recommended for best results.

Check module and vehicle compatibility

You must already have or purchase a Maestro ADS-MRR or ADS-MRR2 interface module separately, as the harness cannot function without it. Verify that your specific Toyota or Scion model and trim fall within the 2005 to 2018 range supported by this harness. Confirm your aftermarket stereo brand offers a compatible iDatalink-ready adapter for the Maestro module. Factory amplifier and backup camera retention depend on correct module programming.

Upgrade from factory radio with feature retention

This harness replaces the original radio connector to install an aftermarket unit while keeping steering wheel audio controls and the backup camera. It also preserves the vehicle settings personalization menu when paired with an iDatalink-ready receiver. The jump is worth it if you want modern smartphone integration and better sound processing without rewiring the car or losing factory safety and convenience systems.

Highlights

  • Retains steering wheel audio controls for safe operation
  • Retains backup camera with any aftermarket stereo for visibility
  • Retains vehicle settings personalization menu with iDatalink-ready stereos
  • Retains factory amplifier for original audio quality
  • Compatible with select Toyota vehicles from 2005 to 2018

Specifications

BrandiDatalink
TypeHarness
FeaturesRequires Maestro ADS-MRR or ADS-MRR2 module

Questions about this item

Does the HRN-HRR-TO1 harness include the Maestro ADS-MRR module or must it be purchased separately?

The product bundles the HRN-HRR-TO1 harness with an ADS-MRR interface module in one package, so both items are supplied together.

Which Toyota and Scion model years does this harness support?

The harness is compatible with select Toyota and Scion vehicles from 2005 to 2018.

Will I keep my steering wheel audio controls and backup camera after installing an aftermarket stereo with this kit?

Yes, the harness retains steering wheel audio controls and the factory backup camera with any aftermarket stereo, and it keeps the vehicle settings menu on iDatalink-ready receivers.

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